Checking The Turn Signal Relay - Yamaha XV19SW Service Manual

Relay unit (fuel pump relay)
2 1
3
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" and "4")
Headlight relay
3
4
2
1
Y/B Br
G/L
R/Y
1. Positive battery terminal
2. Negative battery terminal
3. Positive tester probe
4. Negative tester probe
Result
Continuity
(between "3" and "4")
ET1D71011

CHECKING THE TURN SIGNAL RELAY

1. Check:
• Turn signal relay input voltage
Out of specification → The wiring circuit from
the main switch to the turn signal relay cou-
pler is faulty and must be repaired.
Turn signal relay input voltage
DC 12 V
4
+
+
7-80
ELECTRICAL COMPONENTS
M MMM M MMM M M MMM M M MMM M
a. Connect the pocket tester (DC 20 V) to the
turn signal relay terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
brown "1"
• Negative tester probe →
ground
b. Turn the main switch to "ON".
c. Measure the turn signal relay input voltage.
L LLL L LLL L L LLL L L LLL L
2. Check:
• Turn signal relay output voltage
Out of specification → Replace.
Turn signal relay output voltage
DC 12 V
M MMM M MMM M M MMM M M MMM M
a. Connect the pocket tester (DC 20 V) to the
turn signal relay terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
• Positive tester probe →
brown/white "1", yellow/red "2" or white/yel-
low "3"
• Negative tester probe →
ground
M MMM M M MMM M MMM
L LLL L L LLL L LLL
M MMM M M MMM M MMM